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Amino Acids and Metabolism Quiz

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Which amino acid is the precursor for creatine?

a)

Glycine

b)

Alanine

c)

Leucine

d)

Valine

2.

Which amino acid is involved in the synthesis of heme?

a)

Serine

b)

Glycine

c)

Tryptophan

d)

Tyrosine

3.

Oxaluria Type I is caused by a defect in metabolism of which amino acid?

a)

Cysteine

b)

Glycine

c)

Serine

d)

Alanine

4.

Glycine is degraded via which pathway?

a)

Glycine cleavage system

b)

Urea cycle

c)

Transamination

d)

Gluconeogenesis

5.

Which vitamin is required for glycine cleavage system?

a)

Vitamin B6

b)

Biotin

c)

Vitamin B12

d)

Folic acid

6.

Creatine is synthesized from glycine, arginine, and __?

a)

Methionine

b)

Lysine

c)

Phenylalanine

d)

Histidine

7.

Glutathione is composed of glutamate, cysteine, and __?

a)

Alanine

b)

Arginine

c)

Glycine

d)

Valine

8.

The pH at which a protein has no net charge is called?

a)

pKa

b)

Isoelectric pH

c)

Acidic pH

d)

Basic pH

9.

At isoelectric pH, proteins are?

a)

Positively charged

b)

Negatively charged

c)

Zwitterionic

d)

Highly soluble

10.

Which of the following is a biologically active peptide?

a)

Insulin

b)

Tyrosine

c)

Cholesterol

d)

Adenine

11.

Which is a non-essential amino acid?

a)

Leucine

b)

Isoleucine

c)

Glycine

d)

Lysine

12.

Which amino acid is both ketogenic and glucogenic?

a)

Lysine

b)

Leucine

c)

Tryptophan

d)

Valine

13.

Which enzyme catalyzes transamination?

a)

Aminotransferase

b)

Dehydrogenase

c)

Decarboxylase

d)

Hydrolase

14.

The coenzyme required for transamination is?

a)

NAD+

b)

FAD

c)

PLP (Vitamin B6)

d)

Biotin

15.

Deamination primarily occurs in the?

a)

Kidney

b)

Liver

c)

Muscle

d)

Pancreas

16.

Oxidative deamination is catalyzed by?

a)

Glutamate dehydrogenase

b)

Transaminase

c)

Aminopeptidase

d)

Deaminase

17.

Which amino acid does not undergo transamination?

a)

Glutamate

b)

Ornithine

c)

Lysine

d)

Alanine

18.

Which reaction is common to all amino acid catabolism?

a)

Transamination

b)

Deamination

c)

Decarboxylation

d)

Oxidation

19.

In urea cycle, transamination provides __?

a)

Urea

b)

NH3

c)

CO2

d)

Arginine

20.

What is the main fate of amino group removed by deamination?

a)

Excreted as urea

b)

Used for energy

c)

Stored in cells

d)

Excreted as uric acid